South Dakota LLC Tax Filing Requirements (2026)
South Dakota has no state income tax, so a South Dakota LLC files no state income tax return — members owe only federal income tax and self-employment tax on pass-through income. LLCs selling taxable goods register for the state sales tax, and every LLC files a $50 annual report with the Secretary of State.
Quick Answer
- State income tax
- None — no personal or corporate income tax
- Federal default
- Single-member disregarded; multi-member partnership
- Sales tax
- State sales tax on taxable goods and services
- Annual report
- $50 to the Secretary of State each year
- Franchise tax
- None (a bank franchise tax applies only to financial institutions)
- EIN
- Free from the IRS; required for multi-member LLCs
No State Income Tax
South Dakota is one of the few states with no state income tax — no personal income tax and no general corporate income tax. For an LLC, this means there is no South Dakota income tax return to file on business profits, and members do not owe state income tax on their pass-through share. This is the single biggest reason South Dakota is considered tax-friendly for small businesses.
Members still owe federal income tax and, for active owners, self-employment tax on their earnings. Forming the LLC is covered in how to form an LLC in South Dakota and the how to form an LLC hub; this page focuses on what you file (and do not file) for taxes.
Federal Tax Treatment
An LLC has no federal tax class of its own. By default, a single-member South Dakota LLC is a disregarded entity (reported on the owner's Schedule C) and a multi-member LLC is a partnership (Form 1065, with Schedule K-1s to members). Either can elect corporate or S-corporation treatment by filing the appropriate IRS form.
Because South Dakota has no income tax, the federal return is where LLC income is taxed for most owners. Active members also pay self-employment tax of 15.3% on their earnings; see South Dakota self-employment tax. The federal EIN is free and required for multi-member LLCs.
South Dakota Sales and Use Tax
Although there is no income tax, South Dakota does levy a state sales and use tax on the sale of most goods and many services, plus applicable municipal sales taxes. If your LLC sells taxable goods or services, you must obtain a sales tax license from the South Dakota Department of Revenue and collect and remit the tax. Registration is free through the state's online system.
South Dakota is also known for its role in economic-nexus sales tax rules following the Supreme Court's Wayfair decision, so remote sellers above the state's thresholds must register too. Use tax applies to taxable purchases where no sales tax was collected. See South Dakota business license for related registrations.
Annual Report to the Secretary of State
Every South Dakota LLC must file an annual report with the Secretary of State to stay in good standing. The fee is $50 when filed online (higher for paper), and the report is due by the first day of the anniversary month of formation each year. It confirms the LLC's address, registered agent, and management.
The annual report is a filing requirement, not an income tax, but missing it can lead to administrative dissolution of the LLC. Keep your South Dakota registered agent current so reminders and legal notices reach you. See South Dakota annual report for deadlines.
No Franchise Tax for Most LLCs
South Dakota does not impose a general franchise or privilege tax on LLCs. The state does levy a bank franchise tax, but that applies only to financial institutions such as banks, not to ordinary operating LLCs. For a typical small-business LLC, there is no franchise tax to calculate or pay.
This absence of income and franchise taxes means a South Dakota LLC's recurring state obligations are largely the $50 annual report and any sales tax collection. That light footprint is why the state appeals to many small businesses. Confirm your specific activity does not trigger a special tax.
EIN, Registration, and Deadlines
A multi-member LLC needs a free federal EIN to file its partnership return and to register a sales tax license; a single-member LLC with employees also needs one. Register any sales tax account with the South Dakota Department of Revenue, and register the entity itself with the Secretary of State when you form it.
Federal partnership returns are generally due March 15 and individual returns (where pass-through income lands) in April; South Dakota has no matching income-tax deadline because there is no state income tax. Meet your sales tax and annual report deadlines to stay compliant. See how to get an EIN in South Dakota.
Registration, Nexus, and Records
Even without a state income tax, register the accounts you need. If you sell taxable goods or services, get a free sales tax license from the South Dakota Department of Revenue and plan to collect and remit state and municipal sales tax on schedule. Register the entity with the Secretary of State when you form it, and use your free EIN across accounts.
Understand sales tax nexus. South Dakota was central to the Supreme Court's Wayfair decision on economic nexus, so remote sellers exceeding the state's sales thresholds must register and collect even without a physical presence. If you sell into South Dakota from elsewhere, or from South Dakota into other states, review each state's nexus rules.
Keep clean federal records. Because most of a South Dakota LLC's tax burden is federal, accurate bookkeeping drives your Schedule C or partnership return and your self-employment tax. Separate business and personal accounts, track expenses, and reconcile monthly. Good records also preserve the liability shield by showing the LLC is a genuine, separate entity.
Do not forget the annual report. The $50 report to the Secretary of State is a filing obligation, not a tax, but missing it can lead to administrative dissolution, which unwinds your liability protection. Calendar it around your formation anniversary month and keep your registered agent current so reminders reach you.
As income grows, weigh an S-corporation election. Even with no state income tax, the federal self-employment tax still applies to active owners, and an S election can convert part of that profit into distributions at the cost of payroll and filings. Model it with a CPA. See S-corp election in South Dakota and the business tax overview.
Confirm your federal classification and align your filings to it. A single-member LLC reports on Schedule C, a multi-member LLC files a partnership return, and an entity that elects corporate or S-corporation status files accordingly. Because South Dakota imposes no income tax, these federal returns carry most of the reporting weight, so accuracy at the federal level is what matters most.
Take sales tax nexus seriously if you sell across state lines. South Dakota's role in the Wayfair decision means economic-nexus thresholds can obligate remote sellers to register and collect, and selling from South Dakota into other states can trigger obligations elsewhere. Review each relevant state's thresholds so you collect where required and avoid unexpected liabilities.
Keep the $50 annual report on your calendar. Although it is a filing rather than a tax, missing it can lead to administrative dissolution, which unwinds your liability protection and complicates banking and contracts. Tie the reminder to your formation anniversary month and keep your registered agent current so notices reach you.
Revisit structure as income grows. Even without a state income tax, active owners still owe the 15.3% federal self-employment tax, so an S-corporation election can convert part of that profit into distributions at the cost of payroll and additional filings. Model it with a CPA, and see S-corp election in South Dakota and the business tax overview.
Frequently Asked Questions
Does a South Dakota LLC pay state income tax?
No. South Dakota has no personal or corporate income tax, so a South Dakota LLC files no state income tax return. Members owe only federal income tax and self-employment tax on pass-through income.
How is a South Dakota LLC taxed federally?
By default a single-member LLC is disregarded (Schedule C) and a multi-member LLC is a partnership (Form 1065). Either can elect corporate or S-corporation treatment with the IRS.
Does a South Dakota LLC need to collect sales tax?
If it sells taxable goods or services, yes. You obtain a free sales tax license from the South Dakota Department of Revenue and collect and remit state and municipal sales tax.
What is the South Dakota LLC annual report fee?
The annual report costs $50 filed online with the Secretary of State (more for paper), due by the first day of the anniversary month of formation. Missing it can lead to administrative dissolution.
Does South Dakota have a franchise tax on LLCs?
No general franchise tax applies to ordinary LLCs. South Dakota has a bank franchise tax that applies only to financial institutions, not to typical operating businesses.
Related
- Business tax overview
- How to form an LLC in South Dakota
- South Dakota self-employment tax
- S-corp election in South Dakota
- South Dakota annual report
- How to get an EIN
More South Dakota business guides
Business License Dissolve an LLC Annual Report Articles of Organization Business Entity Search Certificate of Formation DBA Filing LLC Tax Filing Operating Agreement Registered Agent
Sources
- South Dakota Dept. of Revenue — Sales and Use Tax (sales tax license; rates).
- South Dakota Dept. of Revenue — Business Taxes (no state income tax).
- South Dakota Secretary of State — Business Filings ($50 annual report).
- South Dakota Secretary of State — Business Services (LLC formation and reports).
- South Dakota Legislature — Codified Laws Chapter 47-34A (LLC Act) (LLC statutes).
- IRS — Limited Liability Company (LLC) (federal default classification).
- IRS — Single Member Limited Liability Companies (disregarded-entity default).
- IRS — About Form 1065 (multi-member LLC partnership return).
- IRS — Get an Employer Identification Number (EIN is free; issued by the IRS).
- IRS — S Corporations (federal S-corporation rules).
- IRS — Self-Employment Tax (Social Security and Medicare Taxes) (15.3% combined rate; $400 threshold).
- Cornell LII — 26 CFR § 301.7701-3 (entity classification election).
- IRS — About Schedule C (Form 1040) (report sole-proprietor profit or loss).
LegalGlass provides general information for educational purposes and is not a law firm or a substitute for advice from a licensed attorney or tax professional. Laws, fees, and thresholds change; verify current requirements with the IRS, the South Dakota Department of Revenue, and the South Dakota Secretary of State before acting.